2499641 has 2 divisors, whose sum is σ = 2499642. Its totient is φ = 2499640.

The previous prime is 2499631. The next prime is 2499643. The reversal of 2499641 is 1469942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2493241 + 6400 = 1579^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 2499641 - 2⁶ = 2499577 is a prime.

Together with 2499643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2499643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249820 + 1249821.

It is an arithmetic number, because the mean of its divisors is an integer number (1249821).

2^2499641 is an apocalyptic number.

It is an amenable number.

2499641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2499641 is an equidigital number, since it uses as much as digits as its factorization.

2499641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 2499641 is about 1581.0253002403. The cubic root of 2499641 is about 135.7143840126.

The spelling of 2499641 in words is "two million, four hundred ninety-nine thousand, six hundred forty-one".